Sam Kerr won 11 major trophies at Chelsea [Getty Images]Australia striker Sam Kerr has joined Gotham FC on a four-year deal following her departure from Chelsea.The 32-year-old - Chelsea's all-time top scorer in the Women's Super League - announced her Blues exit in May with her contract expiring.Kerr scored 116 times in 158 appearances for Chelsea and netted the winning goal in her final game at home to Manchester United."I'm incredibly excited to return to Gotham FC and to this city," said Ker